title: In response.
authors.affiliation: Department of Orthopaedic Surgery Rush University Medical Center Chicago, IL.
authors.forename: Kern
authors.initials: K
authors.lastname: Singh
mesh_terms: D002574:Cervical Vertebrae / Q000601:surgery*; D005260:Female; D006331:Heart Diseases / Q000401:mortality*; D006801:Humans; D008297:Male; D019637:Orthopedic Procedures / Q000379:methods*; D011183:Postoperative Complications / Q000401:mortality*